Patent US3257955A successfully refreshed from Google Patents.
US3257955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control for turbine pump
Assignee: General Electric Co
•
Filing: 1964-02-04
•
Granted: 1966-06-28
•
Expires: 1984-02-04
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Worst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:15
CPC Classifications
F; F04; F04D; F04D15/00; F04D15/0027; F04D15/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A TURBINE PUMP COMPRISING: (A) A CASING DEFINING AN ANNULAR PPUMPING CHAMBER, (B) AN IMPELLER MOUNTED FOR ROTATION WITHIN SAID CASING, (C) SAID CASING HAVING AN INLET THROUGH WHICH FLUID ENTERS SAID PUMPING CHAMBER, (D) SAID CASING HAVING AN OUTLET THROUGH WHICH FLUID IS DISCHARGED FROM SAID PUMPING CHAMBER, (E) A DAM PIVOTALLY MOUNTED IN SAID PUMPING CHAMBER ADJACENT SAID OUTLET, (F) AND SELECTIVELY OPERABLE MEANS CONNECTED TO SAID DAM FOR MOVING SAID DAM BETWEEN A FIRST POSITION, IN WHICH IT BLOCKS SAID PUMPING CHAMBER TO DIRECT LIQUID INTO SAID OUTLET, AND A SECOND POSITION, IN WHICH FLUID IS CIRCULATED ALONG AN ANNULAR PATH WITHIN SAID PUMPING CHAMBER.
Claim 2
Dependent Claim
108 words
A TURBINE PUMP COMPRISING: (A) A CASING DEFINING AN ANNULAR PPUMPING CHAMBER, (B) AN IMPELLER MOUNTED FOR ROTATION WITHIN SAID CASING, (C) SAID CASING HAVING AN INLET THROUGH WHICH FLUID ENTERS SAID PUMPING CHAMBER, (D) SAID CASING HAVING AN OUTLET THROUGH WHICH FLUID IS DISCHARGED FROM SAID PUMPING CHAMBER, (E) A DAM PIVOTALLY MOUNTED IN SAID PUMPING CHAMBER ADJACENT SAID OUTLET, (F) AND SELECTIVELY OPERABLE MEANS CONNECTED TO SAID DAM FOR MOVING SAID DAM BETWEEN A FIRST POSITION, IN WHICH IT BLOCKS SAID PUMPING CHAMBER TO DIRECT LIQUID INTO SAID OUTLET, AND A SECOND POSITION, IN WHICH FLUID IS CIRCULATED ALONG AN ANNULAR PATH WITHIN SAID PUMPING CHAMBER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |